update oai

qwen_agent/llm/qwen_oai.py

@@ -452,6 +452,7 @@ class QwenChatAsOAI(BaseChatModel):
         response = create_chat_completion(_request)
         # TODO: error handling
         for chunk in response:
+            chunk = json.loads(chunk)
             if hasattr(chunk.choices[0].delta, 'content'):
                 yield chunk.choices[0].delta.content
 
@@ -505,7 +506,6 @@ class QwenChatAsOAI1(BaseChatModel):
                                                 stream=True)
         # TODO: error handling
         for chunk in response:
-            chunk = json.loads(chunk)
             if hasattr(chunk.choices[0].delta, 'content'):
                 yield chunk.choices[0].delta.content